Steering-column bushing



Aug. 7, 1928. 1,679,941

F. c. MORRIS STEERING COLUMN BUSHING Filed Dec. 21, 1927 flbtowq titlPatented Aug. 7, 1928.

UNITED sTATEs PATENT oEFlcE.

FRED C. MORRIS, 0F SAN FRANCISCO, CALIFORNIA.

' STEERING-COLUMN BUSHING. Application led December 21, 1927-. SerialNo. 241,520. I v .l

This invention relates to an anti-rattling hushing :tor steering columnsof motor cars of various types, and its object is to prevent thehammering out of such hushings as vvell as to prevent them from making anoise as the parts of the car hecome worn.

lt vvill he understood hy those skilled in the art that it metalbushings are used in the steering columns ot motor cars that their vvearis largely due to a hammering action `which in time gets the bushing outot round and causes the steering Wheel shatt to rattle still more ratherthan trom any vvear due' to the rotation ot the shaft itselt'. Varioustypes oi hushings have heen produced to avoid this hammering action, huta numherl have detects Which this type oi hushing corrects.

@ne ohject oil the invention is to provide a ruhher cushion tor theoutside ot the actual hearing tor the shatt, which vvill preventhammering, and to provide that ruhher cushion oit such a shape as to prevent it trom contacting With the shatt, as vvell as to cause it todirect any oil that may he poured into the shait 'hearing to the properplace rather than to run dou/n on the ruhher and rot it outo i-"inotherola-ject oli the invention is to produce a hashing vvhich can he easily'assemhled, no vulcaniuation ot the hushing on the rigid steel or metaltoundation hemg necessary, the metal toundation having its surtacelmurled hoth inside and outside to cause the compressed tahric hushingused inside it, and the ruhher cushion outside the same to cling theretosecurely.,

dnother ohject oit the invention is to maire use ot a tahric vvhich hasheen hydraulically compressed to such an ent/ent that it cannot hecompressed any turther, 'ller it the vvearing surtace ol" the hnshing isot suhstantially incompressihle lahric it Will he just large enough toslip the steering col-- umn shalt therethrough vvithout in any vvayenptanding upon the tahrifsc, and therehy intertering vvith itsrotation.,

Another ohject ot the invention is to provide a sottruhher outer covertor the metallic part ct the hushing which vvill have its inner portionso heveled that it will direct any oil poured into the hushing to thehearing surtace, and said ruhher hushing vvill he molded all enough sothat it vvill tightly hold on the knurled outside' of the metal bushing,and cannot easily he dislodged therefrom.

Other objects of the invention will he upparent as the descriptionproceeds.. An embodiment ci the invention is shown in the accompanyingdrawings in which the same reference numeral is applied to the sameportion throughout the several gures oi the drawings and of which theremay he modifications. y

Figure l is a side elevation of the metal hushlng used, a portiont-hereot hein hrolren away tor the purpose ot shovving t e hammerandoutside knurling,

lligure 2 is a side elevation ol the outside ruhher bushing used, aportion heing hrolien avvay to shovv the construction thereo't,

Figure 3 is a side elevation ot the incom pressihle lubricated tahricused inside the metal hushing, and

lligure t is a side elevation ot the complete hushing, a. portionhrolren avvay to ehovv one side section.,

The numeral l indicates the toundation et the hushing, and it consistsot' a metal sleeve ot suitahle thiclmess lmurled hoth inside and outsideto hold the other tvvo parte against displacement. rlhe numeral dindicates a compressed tahrie hashing vvhich has a small percentage otgraphite vvorlred into the same during its construction, and which isprou duced under hydraulic pressure so great as to maire the sleeveincompressihle upon its completion. lfhis sleeve is then tightly :torcedinto the hashing l and hecause ot the roughness ot said hashing willretain its place therein vvithout displacement..

ylhe numeral il indicates the outer setter ruhher covering tor thehashing l., "lhie covering is :tor the purpose oil giving the necessarydeadening ettect to the haering ot the steering shaitt on the hearingsup porting it. lt is provided vvith tvvointurned heveled tlanges asindicated at d and 5 which tlanges reach over on the incompressibletahric hushing 2 to Within ahout one-sinteenth et an inch et the movahleshalt so that il' any oil is dropped on the shatt it vvill he sure torun dovvn hetvveen the iahric Q and the shatt, rather than hetvveen theruhher and metal hashing.,

ln actual practice the ruhher hashing d is made slightly smaller indiameter than the Gil till

lll

liti

lllltl ltltl bushing 1, the object bein to cause it and .its flanges 4and 5 to tight y grip the bush- Or inarily the compressed fabric bushingwill be from one-sixtenth to one-eighth of b aninch thick, and in thefinished article the opening therethrough is made about 3/1000 largerthan the shaftwith which it is used so that the shaft is perfectly freeto rotate therein with substantially no friction due to ex ansion of thecompressed fabric.

aving thus described my invention, what I desire to secure by LettersPatent of the United States is as follows, but modifications may be madein carrying out the invention as shown in the drawings and in the aboveparticularly described form thereof, within the purview of the annexedclaims.

l. A bushing for motor car steering wheels comprising a bushing knurledinside and outside, a fabric bushing within the knurled bushin and arubber .covering for the knurle bushing.

2. A bushing for motor car steering gears comprisinoa knurled metallicbushin a substantially incompressible fabric bus ing forced into theknurled bushing, and a rubber bushing encompassing the knurled bushing,and a portion of the ends of the fabric ushing.

3. A bushing for motor car steering gears comprisin a knurled metallicbushing, a fabrlc bus ing forced into the knurled bushing, and a rubberbushing tightly encompassing the knurled bushing, a portion of therubber bushing extending over the ends of the other two bushings.

In testimony whereof I have hereunto set my hand this 5th day ofDecember, A. D.

FRED C. MORRIS

